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Simple Digital Control of Converters using Building Blocks
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| Author(s) |
M. Ossmann |
| Abstract |
Digital control of converters usually needs a fast PWM generator and fast DSP processing.
It is shown that using the direct digital synthesis (DDS) principle it is possible to generate a
high resolution PWM-like control with much less processing power and low clock rates. This
is achived by dithering on a coarse scale with low computational e®ort. If the Sigma-Delta
principle is used as concept for analog to digital conversion it is possible to built complete
controllers that are mainly based on digital circuitry. We show how to control converters
with simple, cheap and low-power digital circuitry with the °exibility of software. Results
from implementations are shown. As example a single-active-switch two-output converter
has been built where both outputs are regulated using a 8 bit microcontroller. |
| Download |
| Filename: | EPE2001 - PP00164 - Ossmann.pdf |
| Filesize: | 379.9 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-03-09 by System |
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